How is British Colonialism shown in the book?

Even though the subject of colonialism is not specifically dealt with in this novel, it is still pervasive and significant. The events of the novel take place in the last days of the British reign in Nigeria and reveal the tensions present between white and black society, politics, religion, and character. Achebe has very strong views on colonialism, quite obviously, and expresses them in the novel through his condemnation of whites as either grotesque, cruel, ignorant, or immoral, as well as his depiction of the negative impact white culture has on Nigerians (such as Obi). The Nigerians are clearly superior to their colonizers in their values and social mores and norms, but they still must navigate the waters of being second-class citizens in their own country. Every choice makes or has made for him is a product of colonialism.